AMC 30 Preserves Legacy of Mark Lindsay of Boston Boatworks

Launch Supporters

The AMC 30 is a new launch design that will be purpose built for the Appalachian Mountain Club to ferry members and guests to the Three Mile Island camp on Lake Winnepesaukee in New Hampshire. The finished launch, expected to enter service in the summer of 2023, will be christened Appy VI, and will offer several upgrades to her predecessor, Appy V, replacing gas power with electric propulsion in a slippery hull that offers a reduced wake. Drawn by the talented team at Zurn Yacht Design in Marblehead, Massachusetts, and built by Boston Boatworks in Charlestown, Massachusetts, the AMC30 epitomizes the values shared by the late Mark Lindsay, founder of Boston Boatworks and the Appalachian Mountain Club, including efficiency, durability, respect for nature, reduced environmental impact, near-silent operation, and ease of repair.

The AMC 30 is a modern take on a traditional launch, but one in keeping with a strict ferry schedule of four round trips to Three Mile Island Camps each day—efficiency is a requirement in keeping with the sensibilities of the membership and guests of the non-profit Appalachian Mountain Club. Zurn Yacht Design ultimately relied on the computational fluid dynamic services of BAR Technologies Ltd. of the UK, which offered data and suggestions that decreased drag resistance of the hull by 11 percent, while comparing wave-height effects of various hull forms. A short keel provides lateral stability in a crosswind, and aids in turning in tight quarters while also offering protection to the running gear and rudder. The launch is expected to achieve a speed of 9.4 knots at half load.

The design brief called for electric propulsion to help further reduce carbon intensity, and several systems were reviewed. Because Boston Boatworks had an existing relationship with Torqeedo, and used their battery outboard systems to power yacht tenders, while Zurn Yacht Design had specified the systems in several designs. A 25kW water-cooled electric motor and 400Vdc water-coooled lithium battery, throttle controls, and a battery-monitoring system comprise the Torqeedo propulsion system. She will be kept inside at the Three Mile Island Dock House and plugged into a battery-charging system that will take a maximum of six hours to recharge the battery from full discharge.